A 118 g ball is tied to a string. It is pulled to an angle of 6.00° and released to swing as a
pendulum. A student with a stopwatch finds that 16
oscillations take 13.0 S. How long is the string ?

Most energy in an ecosystem comes originally from_

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?